Apparatus for knotting pile-threads.



E. PABUSZEWSKI. APPARATUS FOR KNOTTING PILBTHREADS.

APPLICATION FILED 123.28, 1908. 921 .446, Patented May 11, 1909.

6 SHEETSSHEET 1.

WINESSNES' INVENFUR E. PARUSZEWSKI. APPARATUS FOR KNOTTING PILB THREADS.

' APPLICATION FILED PBB.28, 1908. 921,446 Patented May 11,1909.

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E. PARUSZEWSKI. APPARATUS FOR KNOTTING PILE' THREADS.

APPLICATION FILED rnmzs, 1908.

921 ,446. Patented May 11, 1909.

6 SHEBTSSHEBT 3.

\A/ITNESSES TTU RNEVS E. PARUSZEWSKI. APPARATUS FOR KNOTTING PILETHREADS.

APPLIOATIOF FILED I'll-13.28, 1908.

Patented May 11, 1909.

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E. PARUSZEWSKI. APPARATUS FOR KNOTTING- PILE THREADS.

APPLICATION FILED FEB. 28, 1908.

Patented May 11, 1909.

6 SHEETS-SHEET 5.

WITNESSES FM WW E. PARUSZEWSKI. APPARATUS FOR KNOTTING FILE THREADS.APPLICATION FILED rzmza, 1908.

921,446. Patented May 11, 1909.

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EDWA'RDFPARUSZEWSKI, or KOTTBUS, GERMANY.

APPARATUS FOR KNOTTING- FILE-THREADS.

Specification of Letters Patent.

Application filed February 28, 1908.

Patented May 11, 1909.

Serial No. 418,378.

To all whom it may concern:

Be it known that I, EDWARD PARUSZEW- SKI, a subject of the GermanEmperor, residing at 70 Bahnhofstrasse, Kottbus, Germany, have inventedcertain new and useful Improvements in Apparatus for Knotting thePile-Threads in the Manufacture of Smyrna Car ets and Like Fabrics; andI do hereby dec are the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

The present invention relates to an apparatus for knotting the pilethreads in the manufacture of Smyrna carpets and like woven fabrics.

According to the invention two threads are raised from the warp by abarbed needle and are separated to bring them one on each side of aknotting tweezers; a carrier then lays a pile thread across them and apresser brings the two warp threads together and folds the pile threadover them, so that the ends of the pile thread can be seized by thetweezers which then draw these. ends between the two warp threads.

A suitable apparatus for practicing the i11- vention is illustrated inthe drawings, in which:

Figure 1 is a side-elevation, partly in section, of a loom constructedaccording to the invention, Fig. 2 is a detail front-elevation of oneside of the loom, Fig. 2 is a similar elevation of the other 'side orhalf of the loom, showing the knotting mechanism, Fig. 3 is a detailpers ective view showing the manner in which t 1e knot is formed, Figs.4 and 5 are a side-elevation and vertical section respectively throughthe knotting tweezers and their operating mechanism, Fig. 6 is a detailelevation of the needle for withdrawing and separating two threads fromthe warp, Fig. 7 is a side-elevation of Figs. 6, and Figs. 8 and 9 are aside and front elevation respectively of the conveyer mechanism forcarrying the cut pile-threads to the knotting devices.

The ground fabric is produced in the known manner on an ordinary loomhaving two shafts.

1 is the warp, 2 the pile threads (Figs. 2 3, 8, and 9). The latter areled through perforations in a shield 3 and are drawn forward by pincers4 (Figs. 1, 2 and 9) in the known manner, that is to say, according to.which is cut off in the usual manner by scissors 6, to the knottingdevice, according to the present invention, two conveyer bands 7 (Figs.1, 2 8 and 9) traveling on rollers 8 and 9, are provided with springclamps 10 two of which as the bands travel grip the thread 2 and conveyit downward. Shortly before the thread thus held arrives at the lowestpart of its course, a needle consisting of two parts 11 and 12 connectedafter the manner of scissor blades (Figs. 1, 6 and 7) is moved downward.This needle is formed at its lower end as a barbed hook, so that whenits parts are closed together, it can be thrust unhindered between twoadjacent threads of the warp 1. The pin 14 on which the two parts of theneedle are pivoted is fixed to a bar 19 which slides in the frame 15.The upperportions of the parts 11 and 12 have outwardly curved slots 16and 17 in which engages a pin 18 fixed to the frame. When the bar 19 ismoved downward the pin 18 acting in the slots 16 and 17 first opens theneedle, but closes it again before it is thrust into the warp (Fig. 6).When the bar 19 moves upward again the needle engages by its barbedpoint 13 two warp threads and raises them as shown in Figs. 1, 3 and 6.In the middle of its upward movement the needle is again opened by theaction of pin 18 in slots 16 and 17, so that the two warp threads areheld apart. At this moment clamps 10 on the conveyer bands 7 (Fig. 1)lay the pile thread across the two warp threads. l/Vhile the needlecompletes its upward stroke a presser 20 (Figs. 1, 2 7 and 9) pressesthe two warp threads together at the place where the pile thread hasbeen laid, thus at the same time folding. the two ends of the pilethread downward over the two warp threads. During this operation theknotting tweezers 21 (Figs. 1, 4 and5) approach the pilethread. Thisdevice is carried by an os cillating lever 22 and consists of a smalltube 24, mounted to turn in brackets 23 on the lever 22, and a bolt 25adapted to revolve in this tube. The tube and bolt each has at its lowerend a semi-cylindrical pin 26, 27 which 110 pins form the jaws of thetweezers. The tube 24 also carries a pin 28 and on the bolt 25 is a pin29. These pins engage respectively in slots 30 and 31 of a lever 32centered on the pin 34 carried by a bracket 33 on the lever 22 a spring35 keeps lever 32 against a stop 36.

When the lever 22 is advanced, the upper end of lever 32 strikes againsta lever 37 cen tered on the frame of the machine (Figs. 1, 4 and andnormally pressed against a fixed stop 39 by a spring 38. By strikingthis lever 37, the lever 32 is turned on its center 34 against theaction of spring 35, and owing to the engagement of the pins 28 and 29in the slots 30 and 31, the tube 24 and the bolt 25 are turned inopposite directions and the ja s Z6 and 27 ar op h hangin I ends of thepilethread 2 are now be tween hese jaws. The upper end of the lever 32new slips past lever 37 and the lever 32 returns to its normal positionin which it is held against the stop 36 by action of spring 35. Thus thejaws of the tweezers close a ain and grip the ends of the pile thread. T'e lever 22 now returns and the incline 40 of lever 32 strikes againstthe incline 41 on lever 37. In this movement the lever 32 is preventedfrom turning by the stop 36, while the lev l? 37 moves out of the way.The jaws 26, 27 remain closed and moving as indicated in Fig. 3 betweenthe two warp threads, draw the pile thread 2 toward the work. At thesame time the needle 13 has arrived at its highest, position, and thewarp threads are thrown off the needle by contact with the pointed lowerend of the frame 15. The ends of the pile thread which have been drawnupward above the two warp threads, new drop out of the tweezers 21. Thenap is now knotted and the whole arrangement is advanced a step forwardby suitable gear to the pile thread in the next twov warp threads.

T e va o s m v nts des b ar rived from cams. keyed on the shaft 42 F e-The whole knotting apparatus is mounted on cross beams 43 which canswing in .the frame on pin 44, as, shown in Fig. 2 so that the apparatuscan be displaced. to. allow the e o Pas Having thusv described myinvention, I claim 1 In a loom for weaving pile-fabrics, means to raisetwo adjacent threads from the warp comprising a vertically movableneedle formed of two pivoted parts.

2- In a 001 o W av g p r e s, means to raise two; adjacent threads fromthe warp. comprising a vertically movable needle formed. of two pivotedparts and having a barb d e d- 3-, n 100.111 o W i g p lefa r fl meansto raise certain of the threads from the when the same is lowered.

warp comprising a needle composed of two separate thread-carrying parts,and means to spread said parts to separate the threads.

4. In a loom for weaving pile-fabrics, a vertically movable separatingneedle having a barbed end and composed of two pivoted parts, and meansto spread said parts when the needle is raised and bring them together5. In a loom for weaving pile-fabrics, a separating needle composed oftwo pivoted parts having curved slots, a fixed pin engaging saidslots,and means to raise and lower the needle.

6. In a loom for weaving pile-fabrics, means to cut the pile-threads,and means to carry the cut threads to the knotting devices, comprisingan endless conveyer.

7. In a loom for weaving pile-fabrics, means to cut the pile-threads,and means to carry the cut threads to the knotting devices, comprisingan endless conveyer having clamps to grip the cut pile-threads so thatthe latter after being out are carried along bythe conveyer.

8. In a loom for weaving pile-fabrics, means to cut the pile-threads,and parallel bands carrying clamps by which the ends of the cut threadsare grasped and the thread carried along to the knotting devices.

9. In a loom for weaving pile-fabrics, means to cut the pile-threads,parallel conveyer-bands across which the cutthreads extend transversely,and clamps on said bands by which'the ends of the cut threads aregrasped, such threads being carried at each end by a different band.

10. In a loom for weaving pile-fabrics, knotting tweezers comprising abolt forming one member of the tweeze'rs,a tube inclosing the bolt andforming the other member, and means to turn said parts in oppositedirections comprising pins carried by the bolt and tube at opposite endsand a fulcrumed lever engaging said pins. 7

11. In a loom for weaving pile-fabrics, knotting tweezers comprising aninner bolt, an outer tube, a lever having an intermediate pivot andconnected at one end with the bolt and at the other end with the tube,and means to oscillate said lever.

12. In apparatus for knotting the pile threads in the manufactureofSmyrna carpets and like fabrics the combination of a barbed needle forwithdrawing and separating two threads from the warp, a knottingtweezers, an endless conveyer for conveying a pile thread on to the twowarp threads, means for pressing the ends of the pile thread and the twowarp, threads together and means for causing the tweezers to seize theends of the pile thread and draw them between the two warp threads.

13. In apparatus for knotting the pile threads inthe manufacture ofSmyrna carpets and like fabrics the combination of a and draw thembetween the two warp 10 arbed needle for withdrawing and separatthreads.ing two threads from the warp, a knotting In testimony, that I claim theforegoing as tweezers, an endless conveyer provided with my invention, Ihave signed my name in 5 clamps for conveying a pile thread on to thepresence of two subscribing witnesses.

two warp threads, means for pressing the EDWARD PKRUSZEWSKI. ends of thepile thread and they two warp I Vitnesses:

threads together and means for causing the 1 HENRY HASPER, tweezers toseize the ends of the pile thread l WOLDEMAR HAUPT.

